The scaling of the shear stress in an accretion disk

Details The scaling of the shear stress in an accretion disk The scaling of the shear stress in an accretion disk

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...143..389b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 143, no. 2, Feb. 1985, p. 389-392.

Astronomy and Astrophysics

Astrophysics

17

Accretion Disks, Astrophysics, Scaling Laws, Stellar Mass Accretion, Viscosity, Astronomical Models, Gas Pressure, Magnetic Effects, Magnetohydrodynamics, Radiation Pressure, Shear Stress

Scientific paper

In most accretion disk models, the viscosity is scaled to the pressure with a parameter α. There are three pressure terms of interest: gas, magnetic and radiation pressure. If α is kept constant throughout the disk, scaling with the total pressure results in an unstable disk; scaling with the gas pressure results in a stable disk. It is demonstrated that scaling with the gas pressure is only justified, when the amplification of the magnetic field in the disk is limited by buoyancy. However, in the case of reconnection limited hydromagnetic turbulence, the shear stress scales with the total pressure.

Affiliated with

Also associated with

No associations

Rating

The scaling of the shear stress in an accretion disk does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The scaling of the shear stress in an accretion disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The scaling of the shear stress in an accretion disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1590212